Well I have to say apple customer service is amaZing. Have a Mac problem overseas. U can download the apple store app on your iPhone. It finds the nearest apple store. U can set an appointment and look for other genius bars nearby. And then it has mapping to find the store (although google couldn’t find 300 nanjing dong Lu not find apple stores in shanghai).
And when u enter it asks u to self checkin. And if ur headed somewhere u can find any apple store world wide and see when an appointment is available.
And the rumor is they will fix your Mac if u have AppleCare even if bought in another country. Wow!
We will see if it works. The largest apple store in china is sure busy!